The past has known many empires and totalitarian regimes. Even today there are still dictatorships that oppress their citizens to make sure they stay loyal. But in the shadows, the downfall is being contemplated. In Code Geass, the fictional Holy Empire of Britannia is bound to fall. Britannia, most likely a reference to what we know as Britain, has taken over most of the world. They conquer other nations, populate them and make sure the native citizens become the slaves of the new invader.
Of course native citizens won’t give away their independence that easily and no matter the cost, they will get their country back. A nation that invades another country could have many possible reasons. Expanding territory can’t be the sole purpose. Natural resources can be abundant on the yet to conquer territory, or a possible threat could arise and should be stopped before it gets out of hand.
Some reasons maybe of more noble thought and others must be justified with propaganda. A possible propaganda slogan could be, to give the native citizens their independence back from the government that is ruling them. Of course the new ruler is going to invade them and the native citizens perhaps don’t experience their government as oppressive. The invader Britannia, treats its ‘new citizens’ as slaves. This results in hatred from the conquered nation.
Not everybody dares to fight, but the ones that do, are giving the Britannians a hard time. Guerilla movements break down the enemy with little damage. The clocks of downfall sound when Zero crowns himself the leader of the Black Knights. An organized group , that inflicts heavy damage to the Britannian forces. The way this is achieved is of course fictional. The power Zero possesses is otherworldly and the weaponry used in Code Geass, is not something we have available in present times. Despite this, the series portrays a situation that isn’t unthinkable.
Feelings of independence and nationalism are sure to arise when ones country is being taken away. Moral can’t be changed overnight. Using brute force to convince the natives of your good intentions, isn’t the most persuading tactic. Totalitarian regimes will never last forever, when civilians take matters into their own hands.